/*
 * Copyright (c) 2023 OceanBase.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.oceanbase.odc.service.session;

import java.util.concurrent.TimeUnit;
import java.util.function.Predicate;

import org.apache.commons.lang.Validate;

import com.oceanbase.odc.core.session.ConnectionSession;

import lombok.NonNull;

public class SessionValidatorPredicate implements Predicate<ConnectionSession> {

    private final long timeoutMillis;

    public SessionValidatorPredicate(long timeout, @NonNull TimeUnit timeoutUnit) {
        Validate.isTrue(timeout > 0, "Timeout setting has to be greater than zero");
        this.timeoutMillis = TimeUnit.MILLISECONDS.convert(timeout, timeoutUnit);
    }

    @Override
    public boolean test(ConnectionSession session) {
        if (session.isExpired()) {
            return false;
        }
        long interval = System.currentTimeMillis() - session.getLastAccessTime().getTime();
        if (interval < 0) {
            return true;
        }
        return interval <= timeoutMillis;
    }

}
